# op:numeric-multiply - XPath XQuery Reference

Returns the arithmetic product of its operands: ($arg1 * $arg2).Defines the semantics of the "*" operator when
         applied to two numeric values.General rules: see . For xs:float or xs:double values, if one of the operands is a
            zero and the other is an infinity, NaN is returned. If one of the operands
            is a non-zero number and the other is an infinity, an infinity with the appropriate sign
            is returned.